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(No Model.) 2 Sheets-Sheet 1.

C. SINNING. LASTING MACHINE.

Patented Sept. 1,1891.

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(No Model.)

O. SINNING. LASTING MACHINE. No. 458,921. l Patented Sept. 1, 1891. i E'9IWI um) l f l" m 1' 'f j lll 111111111111 11111111 1, w 11|.

l mlmllullllllllnlll @Slg 6; Q 11,9304* UNITED STATES PATENT OEEICE.

CHARLES SINNING, OF ST. LOUIS, MISSOURI, ASSIGNOR TO THE SINNING LASTING MACHINE COMPANY, OF SAME PLACE.

I ASTING-IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 458,921,dated September 1, 1891.

Application tiled January ZO, 1891. Serial No. 378.410. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES4 SINNING, of the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Lasting-Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

This improven'ient relates especially to the devices for actuating the pinchers by which the leather is drawn over thelast and crimped when required.

The novel features of the invention will be set forth in the claims.

Figure I is a side elevation of part of a lasting-machine, showing my invention. Fig. II 1s a top view of same. Figs. III and IV are opposite side elevations of the cam. Fig.

V is a perspective View of the swivel-block, in which the upper end of the pineher-shaft has bearing. Fig. VI is a perspective View of the sliding block, in which the lower end ofthe pincher-shaft has bearing. Fig. VII is a top view of the pincher-lifting lever and cam, part of the frame being in horizontal section at VII VII, Fig. I. Fig. VIII isa top View of the pincher-elosing lever and cam, parts of the frame being in horizontal section at VIII VIII, Fig. I. Fig. IX is a top view of the connecting-rod and cam governing the forward-and backward movement of the pinehers, the frame being shown in horizontal section at IX IX, Fig. I. Fig. X is a front elevation. Figs. XI and XII are vertical sections at XI XII, Fig; II, showing in elevation and in different positions the stop-arm for limiting the movement of the crimpinglever. Figs. XIII and XIV are top views of the crimping-shaft, showing it in different positions. Figs. XV, XVI, XVII, and XVIII are elevations of the pinchers in various positions. Fig. XIX is an enlarged view of the pinchers with the closing-collar in section.

l is part of the frame of a lastingmachine.

2 is a standard giving bearing to the shaft 3 of the cam-wheel et. The pinchers 5 have two jaws adapted to grasp the edge of the Lipper' leather being stretched over and tacked to a last held in the hand of the operator. The jaws are pivoted to thelowerend of the shaft G, which is adapted to turn in its bearings when crimping the leather and to swing forward and backward when stretching the leather over the last and when returning to take a fresh grip on the leather. The upper bearing of the shaft G is in a swivel-block 7, rocking on gudgeons S, having bearing in the frame. The lower bearing of the shaft is in a sleeve or long` collar 9, which has bearing in a slide-block 10 and which has vertical and rotary movement in its bea-ring 10. The block l0 has lips ll resting upon the top of the guides l2, between which it works.

13 is a rod or bar pivoted at la to lugs 15 upon the block l() and pivoted at 16 to the depending arm 17 of a bell-crank lever 1S, whose horizontal arm 10 is connected by a spring 20 to a fixed point 2l. The tension of this spring is made adjustable by a nut 22, which screws on the eyebolt 23, to which the lower end of the spring is connected, said nut bearing against the under side of the fined object 2l. the spring 2O will be to push forward the block lO, and thus carry forward the pinehers 5 to pull the edge of leather forward overthe last. The rod 13 carries on its side a stud or It will be seen that the action of anti-friction roller 2i, which plays in the camgroove 25 of the cam-wheel 4.. \Vhen`the rotation of the wheel brings the recess 2G to the stud 24, the rod 13 is at liberty to move outward, which it does under influence of the spring 20, and is almostimmediately carried back again as the stud is forced backward by the rear part of the recess. The pinchershaft is elevated by a lever 27, whose rear end is drawn down by a spring 28, the lower end of the spring being connected to a verticallymovable rod 20, by which the tensional force of the spring may be regulated. The lever works on a fulcrum 30. The front end 31 of the lever is forked, the fork having rounded ends 32, which have bearing in the cireumfer- ICO groove of the wheel. lVhen the recess or enlargement 36 of the groove is brought to the stud 34, the spring 28 carries the stud down into the recess and throws up the outer end of the lever and the pincher-shaft 6. The sleeve or collar 9 has endwise movement on the pincher shaft or rod, its descent forcing the jaws of the pinchers inward upon the leather and its upward movement relatively to the pincher-rod relieving the jaws from its pressure and allowing them to open under theiniiuence of the spring 37, that is secured between the jaws. The sleeve 9 is moved vertically by a lever 38, fulcrumed to the frame at 39. The forward end 38n of the lever is telescoped into the body of the lever to allow the elongation of the lever as the pinchers are pushed forward. This extension part is hinged at 40 to a collar 41, which occupies a circumferential groove in a collar 42, attached to the sleeve 9.

43 is a draw-sprin g connecting the rear arm of the lever 38 with the rear arm of the lever 27. The tendency of this spring is to force the sleeve downward.

44 is a stud 0r anti-friction roller upon the rear arm of the lever 38, said stud playing in the groove 25, the construction being such that when the stud is in the narrow part of the groove the sleeve is in its highest position relatively to the pincher-shaft, and the jaws of the pinchers are open. (See Figs. XV and XIX.)l lVhen the rotation of the cam brings the recess 45 to the stud, the spring 43 carries the stud up into the recess and pushes the sleeve forcibly down on the jaws of the pinchers. vThis takes place when the pinchers are in position to seize the edge of the-leather preparatory vto drawing it forward over the last. As soon as the leather has been seized the pincher-shaft rises and carries the sleeve upward with it, so that the pinchers keep hold of the leather until the last` side 46 of the recess 45 comes in contact with the stud 44 and the sleeve is thrown upward, allowing lthe jaws of the pinchers to separate and release the leather.

The crimping mechanism will now be described. In order to do the crimping, the Vpinchers are turned during their combined forward and upward movement.

47 is an arm fast to the top of the shaft G, connected byadraw-spring 48 to a fixed point 49, the tendency of the spring being to turn the pinchers from the position shown in Figs. XV and XVI to that shown in Figs. XVII and XVIII, and in doing so to crimp the leather. 50 is an arm also fast to the shaft and carrying an antifriction roller 51, which bears against the side of the lever 52, which is fulcrumed at 49, and having at the under side of its rear end a stud or anti-friction roller 53, which plays against the side 54 of the cam-wheel 4, in which is a recess 55, that is entered by the stud at the proper time for the crimping, and at such time, if the lever 52 is free to move, the shaft 6 is turned by 'u p th e slack leather. by the last side 56 of the recess'55 the lever 7o Ithe force of the spring 4S'sufciently to take l As the stud 53 is reached tion of lasting no crimping of the leather 8o takes place, and at such time the lever 52 is held in normal position by resting in the notch 59 of a catch 57, whose notched end 58 is at such time in its lowest position. When,

however, a small degree of crimping must be 85 done, the recessed end is slightly raised, as seen in Fig. XII, and the lever 52 is allowed to move outward to the recess 60. To allow greater crimping movement, the end 58 being elevated, as seen in Fig. XI, the lever is 9o allowed to move outward into recess 61. The catch works on a pivot 62 aud has an arm 63, connected by a rod 64 with the arm 65 upon a rock-shaft 66. The rock-shafthasan arm 67, connected by a rod 68 with a treadle 95 69, that engages a rack 70 to hold the catch in the required position. (See Fig. X.)

The operation of the parts may be briefly described as follows: The pinchers are first carried down by the lever 27 and cam 4, and Ico the jaws, being forced apart by the spring 37, are in position to close upon the edge of the leather. The camfstud 44 of the lever 38 now reaches the recess 45, when the spring 43, acting on the lever 38, forces the sleeve' 9 sud- 105Y denly down 4and closes the jaws upon the leather. The cam-stud 34 of thc lever 27 now reaches the recess 36, when the spring 28, acting on the lever 27', draws up the pincher-rod with the pinchers at the same time the cam- 1ro stud 24 of the rod 13 reaches the recess 26, and the spring 20, acting on the lever 18, throws the rod 13 and the lower end of the pincher-rod with the pinchers forward, drawing the edge of the leather over the last. The r I5 cam-stud 44 is next acted on by the part 46 of the cam 4, and the sleeve 9 (which had been lifted with the pincher-rod) is lifted so as to allow the pincher-jaws to fly open and release the leather which hadv been previously 12o tacked to the insole. In case crimping is required, the catch-lever is thrown into the position shown in Fig. XI or XII, and the spring, K 48 is at liberty to turn the pincher-shaft at the same time as the leather is being drawn up- 125 ward and outward, the lever 52 restoring the pincer-shaft to normal position at the end of each crimping movement. It will be seen that the closing of the jaws of the pinchers upon the leather, the upward and forward 13e movement of the pinchers in stretching the leather over the last, and the crimping of the leather are all accomplished by spring force, so that the movements are not posi- (See Figs.

tive, but will be accommodated to circumstances and will prevent injury to the leather, whileinsuringperfection of performance. To explain Supposing` the leather to vary in thickness, the jaws of the pinchers will close upon it with equal force, and thus always take secure hold without pinching the leather injuriously, as would be the case Where they always close to the same degree. The spring force insures the leather being' drawn with an equal strain under all circumstances, whether it may have a greater or less degree of elasticity or where it requires to be drawn a greater or less distance, as the pinchers cease to draw the leather when the desired strain is reached, but not before. In like manner in the crimping when the slack leather has been taken up the twisting ceases, so that there is automatic accommodation to circumstances in all cases.

Two arms 47 and 50 are shown and described at the head of the pincher-shaft, and this is the preferred construction; but it is obvious that the springS and lever 52 might act on a single arm. Itwill be observed that the connection of the arms 47 and 50 with the spring 4S and lever 52 is such as to allow the shaft G free oscillatory movement without binding at this point.

I claim as new and of my invention- 1. rlhe combination, in a lasting-machine, of a shaft (l, carrying the pinchers 5 at its lower end, a rocking bearing supported on trunnions, and sliding lower bearing 9 10, supported on xed guides 12, substantially as and for the purpose set forth.

2. The combination, in a lasting-machine, of a pincher-shaft 6, oscillating on trunnions 8, the cam 4, rod 13, with cam-stud working in the cam-groove, and a lever 18, connected with the rod 1 3 and with a spring 20, substantiall y as and for the purpose set forth.

3. The combination, in a lasting-machine, of a pincher-shaft havingl forward and rearward movement, the rod 13, with cam-stud 24, the cam 4, the lever 18,and the spring 20, all constructed and adapted to operate substantially as set forth.

#1. 'l`he combination, in a lasting-machine, of a pincher-shaftti, having rotary and oscillatory movement, the sleeve J upon the shaft, and the operating-lever 3S, having an extension-piece 3S telescoped in the body of the lever and connected to the sleeve, substantially as and for the purpose set forth.

5. The combination, in a lasting-machine, of a pincher-shaft G, having an arm projecting radially and a spring 4S connected with the arm, a lever 52, bearing against the arm of the shaft (5, and a cam acting on the lever, all substantially as set forth.

6. The combination, in a lasting-machine, of the piucher-shaft G, arms 47 and 50, spring 48, lever 52, and cam fl, all constructed and adapted to operate substantially as set forth.

7. The combination, in a lastinganachine, of the pincher-shaft 6, adapted to turn and oscillate in its bearings, the arm 50, secured adjustably to said shaft, the spring 4S, lever 52, adapted to impinge said arm, and cam 4, all constructed and adapted to operate substantially as set forth.

8. The combination, in a Alasting-machine, of the pincher-shaft G, the spring 48, and lever 52, with connections between the shaft and lever, substantially as and for thev purpose set forth, and the adjustable catch 57, adapted to limit the movement of the lever, as described.

9. The combination, in a lasting-machine, of a pincher-shaft G, sleeve 9, rod 13, levers 1S, 27, 38, and 52, cam 4, and springs 23, 2S, 43, and 4S, all adapted to operate substantially as set forth.

CHARLES SINNING.

In presence of- SAML. KNIGHT, THos. KNIGHT. 

